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Studies have internal validity when, random error apart, reported differences between exposed and unexposed individuals can be attributed only to the exposure under investigation.
Another source of measurement error, apart from inaccuracies in self-report, is that the folate content of food changed over time.
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Monye's two errors apart – twice he was caught with the ball in the wrong arm and stopped by fine defensive work – the backs could enjoy their post-match Sunday more than the pack, though Stephen Jones, the Wales stand-off, did emphasise: "We [the backs] have got to look at our game and say, 'Listen, we need to be more clinical'.
Table 3 justifies our choice of finding at least 12 matched patterns to continue the PM forecast procedure and obtain satisfying errors (apart from the value of 23.31 for the 60-min-ahead forecast (see Table 3) which probably pertains to an unusual situation); our choice is derived from a tradeoff, and thus limits the intractable situations to only 12%% of the total cases.
If statistically distinct levels of person ability are defined as ability strata with centers three measurement errors apart, then the PSEP can be translated into the number of statistically distinct person strata identified by the test (Person Strata = [4·PSEP + 1]/3).
Looking at the distances between item correlations with their hypothesized scales and correlations of the same item with the non-hypothesized scales, the smallest distance was 0.11, between the MH5-MH correlation and the MH5-VT correlation, which was greater than two standard errors apart.
"I thought Ryan off the bench was really, really good and I thought Lewis out the back made one error, but apart from that he was outstanding.
By trial and error, taking apart and studying Philco, RCA, and DuMont televisions, he figured out how to reduce the devices' electrical components to their minimum functional number.
Items whose logit location values were more than two standard errors (SE) apart at Time 1 and Time 2 would be considered statistically significantly different, and, therefore, item stability would not be considered present [ 33].
"Frank," Eli said, and took a few larger-than-normal steps toward Wagner and held out his hand, smiling as if they were old war buddies whom a comedy of errors had kept apart for years.
However, because pianists in our study performed the same tones in parallel with both hands (one octave apart), errors reflecting false memory retrieval should occur in both hands, instead of only in one.
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